Announce the breaking change to switch to heroku/builder:22 in the auto-build-image

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Deprecation Summary

The auto-build-image project will switch from the heroku/builder:20 image to heroku/builder:22 image, which may be a breaking change for some users.

Breaking Change

A user is able to test the new behavior by setting the CI/CD variable AUTO_DEVOPS_BUILD_IMAGE_CNB_BUILDER to heroku/builder:22 a head of time. If they want to stick to heroku/builder:20 even after %17.0 (and when we've changed the default value), they can set the aforementioned CI/CD variable to heroku/builder:20.

Affected Topology

Affected Tier

Checklists

Labels

  • This issue is labeled deprecation, and with the relevant ~devops::, ~group::, and ~Category: labels.
  • This issue is labeled breaking change if the removal of the deprecated item will be a breaking change.

Timeline

Please add links to the relevant merge requests.

  • As soon as possible, but no later than the third milestone preceding the major release (for example, given the following release schedule: 14.8, 14.9, 14.10, 15.014.8 is the third milestone preceding the major release):
  • On or before the major milestone: A removal entry has been created so the removal will appear on the removals by milestones page and be announced in the release post.
  • On the major milestone:

Mentions

  • Your stage's stable counterparts have been @mentioned on this issue. For example, Customer Support, Customer Success (Technical Account Manager), Product Marketing Manager.
    • To see who the stable counterparts are for a product team visit product categories
      • If there is no stable counterpart listed for Sales/CS please mention @timtams
      • If there is no stable counterpart listed for Support please mention @gitlab-com/support/managers
      • If there is no stable counterpart listed for Marketing please mention @cfoster3
  • Your GPM has been @mentioned so that they are aware of planned deprecations. The goal is to have reviews happen at least two releases before the final removal of the feature or introduction of a breaking change.

Deprecation Milestone

Planned Removal Milestone

Links